EP0316255B1
Expired / Lapsed
EP
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Capping polydienes
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1988-10-05
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Granted: 1994-05-18
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Expires: 2008-10-05
Abstract
No abstract record available.
Inventors
- 👤 Adel Farhan Halasa
- 👤 Barry Allen Matrana
- 👤 Sylvia Eileen Robertson-Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:10
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08C; C08C19/00; C08C19/30; C08C19/42; C08C19/44
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
61 words
A process for preparing a polydiene having a high level of affinity for carbon black which is characterized by reacting a metal terminated polydiene with a capping agent selected from the group consisting of halogenated nitriles having the structural formula X-A-C≡N wherein X represents a halogen atom and wherein A represents an alkylene group containing from 1 to 20 carbon atoms.
Claim 2
Dependent Claim
66 words
A process as specified in claim 1 characterized in that the metal is selected from the group consisting of lithium, barium, magnesium, sodium, and potassium; characterized in that said polydiene is comprised of repeat units which are derived from at least one conjugated diolefin monomer; and characterized in that said polydiene has a number average molecular weight which is within the range of 50,000 to 500,000.
Claim 3
Dependent Claim
66 words
A process as specified in claim 1 or 2 characterized in that said reaction is carried out at a temperature which is within the range of 0°C to 150°C; characterized in that said polydiene is comprised of repeat units which are derived from at least one conjugated diolefin monomer containing from 4 to 8 carbon atoms; and characterized in that said polydiene is terminated with lithium.
Claim 4
Dependent Claim
48 words
A process as specified in claim 1 characterized in that said halogenated nitrile has the structural formula X-A-C≡N wherein X represents a halogen atom selected from the group consisting of fluorine, bromine and chlorine and wherein A represents an alkylene group containing from 1 to 4 carbon atoms.
Claim 5
Dependent Claim
15 words
A process as specified in claim 4 characterized in that said halogenated nitrile is chloroacetonitrile.
Claim 6
Dependent Claim
19 words
A capped polydiene which is characterized by being made by the process specified in any of the preceding claims.
References Cited (Backward Citations)
No citation records indexed.
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